What is the complete factorization of the polynomial below? x^3+ 5x^2- x-5

Question

What is the complete factorization of the polynomial below?
x^3+ 5x^2- x-5

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Cora 10 hours 2021-10-14T02:22:00+00:00 1 Answer 0

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    2021-10-14T02:23:13+00:00

    Answer:

    (x-1)(x+1)(x+5)

    Step-by-step explanation:

    x^3+5x^2 – x-5=

    x^3-x+5x^2-5=

    x(x^2-1) +5(x^2 – 1)=

    (x^2- 1)(x+5)=(*)

    (x-1)(x+1)(x+5)

    (*) A^2 – B^2 =(A-B)(A +B)

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45:7+7-4:2-5:5*4+35:2 =? ( )